#include <iostream>
#include <unistd.h>
#include <cstdlib>
#include <strings.h>
#include <sys/types.h>
#include <sys/socket.h>
#include <netinet/in.h>
#include <arpa/inet.h>
void Usage(std::string proc)
{
    std::cout << "\nUsage:\t" << proc << "serverip serverport\n"
              << std::endl;
}

int main(int argc, char *argv[])
{

    if (argc != 3)
    {
        Usage(argv[0]);
        exit(0);
    }

    std::string serverip = argv[1];
    uint16_t serverport = std::stoi(argv[2]);

    struct sockaddr_in server;
    bzero(&server, sizeof(server));
    server.sin_family = AF_INET;
    server.sin_port = htons(serverport);
    server.sin_addr.s_addr = inet_addr(serverip.c_str());
    socklen_t len = sizeof(server);

    int sockfd = socket(AF_INET, SOCK_DGRAM, 0);
    if (sockfd < 0)
    {
        std::cout << "socket create error\n";
        return 1;
    }
    std::string message;
    char buffer[1024];
    while (true)
    {
        std::cout << "Please Enter@ ";
        std::getline(std::cin, message);
        sendto(sockfd, message.c_str(), message.size(), 0, (struct sockaddr *)&server, len);
        struct sockaddr_in temp;
        socklen_t len=sizeof(temp);
        ssize_t s=recvfrom(sockfd,buffer,1023,0,(struct sockaddr*)&temp,&len);
        if(s>0)
        {
            buffer[s]=0;
            std::cout<<buffer<<std::endl;
        }
    }
    
    close(sockfd);

    return 0;
}